Mark Duffy MD, PhD

Mark Duffy MD, PhD

Practice Locations

Aurora BayCare Health Center in Green Bay - BayCare Clinic Eye Specialists

2253 W Mason St

Green Bay, WI, 54303

Phone: 920-327-7000 or 877-462-9465

Get Directions


Mark Duffy, MD, PhD, received his oculoplastics training at the Manhattan Eye, Ear, and Throat Hospital in New York City. He has practiced and taught aesthetic and reconstructive oculofacial plastic surgery at the University of Illinois - Chicago. He has also worked on spinal cord regeneration for many years before turning to wound healing and tissue regeneration research. Dr. Duffy even holds a patent on wound healing technology.


Surprisingly, as a child, Dr. Duffy believed he would grow up to be an architect or artist. He felt most suited to oculofacial plastic and reconstructive surgery, as no injury, tumor, disease, or droopy eyelid is the same. The repairs and rebuilding he does with the face and eye sockets are quite challenging but he is extremely rewarded and honored to have made a difference in his patients' lives.


There are a few times when there is no choice but to perform surgery. However, with Dr. Duffy's experience and modern technology, a lot can be accomplished without surgery. He likes to address all of his patients' needs individually and find what the best, not the easiest, options are for them.


Dr. Duffy wants his patients to feel confident and comfortable with his decisions. "Although my team and I can do a lot of positive things for our patients, I will let you know when I feel we can't meet your expectations or needs. I never question someone's desire for a second opinion and encourage it if there is any doubt."

Medical Services

Eye Specialists

Related Medical Services

Oculoplastic Surgery


Board Certified by the American Board of Ophthalmology

Areas of special interest


Cosmetic Facial and Eyelid Surgery

Ectropion, Entropion Repair

Endoscopic Browlift

Eyelid Cancer

Lacrimal Obstruction and Repair

Mid-Face Lift

Orbital Trauma and Tumors

Ptosis Repair

Therapeutic Botox

Cosmetic Botox and Fillers


1992 University of Illinois, Chicago, IL


Ravenswood Hospital


University of Illinois Chicago - Ophthalmology


Manhattan Eye, Ear, and Throat Hospital - Oculoplastics


Additional Certifications, Training and Achievements

Clinical Assistant Professor - University of Wisconsin School of Medicine & Public Health

© 2021 BayCare Clinic.

All Rights Reserved.

BayCare Clinic,, is the largest physician-owned specialty-care clinic in northeastern Wisconsin and Michigan’s Upper Peninsula. It is based in Green Bay, Wisconsin. BayCare Clinic offers expertise in more than 20 specialties, with more than 100 physicians serving in 16 area communities. BayCare Clinic is a joint partner in Aurora BayCare Medical Center, a 167-bed, full-service hospital. Follow BayCare Clinic on Facebook and Twitter.